1340222311 has 2 divisors, whose sum is σ = 1340222312. Its totient is φ = 1340222310.

The previous prime is 1340222297. The next prime is 1340222321. The reversal of 1340222311 is 1132220431.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1340222311 - 2¹¹ = 1340220263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1340222321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670111155 + 670111156.

It is an arithmetic number, because the mean of its divisors is an integer number (670111156).

Almost surely, 2^1340222311 is an apocalyptic number.

1340222311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340222311 is an equidigital number, since it uses as much as digits as its factorization.

1340222311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1340222311 is about 36609.0468463739. The cubic root of 1340222311 is about 1102.5347362492.

Adding to 1340222311 its reverse (1132220431), we get a palindrome (2472442742).

The spelling of 1340222311 in words is "one billion, three hundred forty million, two hundred twenty-two thousand, three hundred eleven".